Of course that natural immunity exists - there is general non-specific immunity, which is used against new viruses. If something like this wouldn't exists, every new virus will exterminate whole mankind.
General innate immunity doesn't make you invincible. Many people have died from Covid. The way to achieve immunity to Covid is either catch it, or take the vaccine. There isn't a third option.
Let your body get rid of the pathogens by not wearing a mask
There is no medical reason to not wear a mask.
Of course there are many reasons. I have some specific medical issues, which gets much worse in wet environment and wearing masks get it worse. Psychological problems exists too (these are medical issues too). Wearing mask for a long time is not natural, because people just had to breath...
I should have been clearer. I meant specifically in response to Jet Cash's argument that wearing a mask is counterproductive, and that no-one should wear masks. You are of course correct that sometimes people cannot wear masks for medical (including psychological) reasons.
I wrote a post to you in another topic, but you didn't answer. Why do you blame anti-waxers, but don't agree with contribution of pro-waxers to other issues conjuctive with covid restrictions?
Apologies, I either didn't see it, or else was too focused on responding to someone else. As for blaming anti-vaxxers, I have yet to see valid data to support their arguments, whereas there are mountains of data to refute them conclusively. Whilst Jet Cash is right that people are different, and certainly anti-vaxxers aren't all the same, many anti-vaxxer arguments are faith-based rather than fact-based. Their position is in direct opposition to all the evidence. I'm not sure what you mean in your second point "don't agree with contribution of pro-waxers to other issues conjuctive with covid restrictions" - please could you clarify?